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One way to go about this is to use a regular expression :
If $file is the name of your file do:
<?
echo eregi("\.(gif)$",$file)?"File is a gif\n":(eregi("\.(jpe?g)$",$file)?"File is a jpeg\n":"File is
neither gif nor jpeg\n");
?>
A second option is to use the getimagesize() function. It returns an array containing the
image size, image type, and some other stuff
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Categories : PHP, Strings, Unicode, Regexps, Rich Site Summary (RSS) | | | ereg -- Regular expression match
Categories : PHP, PHP Functions, Regexps | | | A couple of functions that convert an IP address into its color code and not-color-code. Useful when viewing an apache log with a mysql result grouped by IP
Categories : PHP, Graphics, Databases | | | How to display any array in several rows and columns of a table. Not just
in one column or in alternate rows. This example shows a nice color table
generated with PHP, but can be used with any array values(e.g. Database)
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Categories : PHP, HTML, Regexps, Arrays | | | PHP Round Clock - Must have Gif support to use this.
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Categories : PHP, GD image library, Graphics | | | Tag content retrieval from websites with preg_match
Categories : PHP, Regexps, Arrays, HTML and PHP | | | I need a trim function/regexp that will trim all " " from the ends of a string.
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Categories : Graphics, HTML, HTML and PHP, PHP | | | Random Image Display
Categories : PHP, Filesystem, Graphics, HTML and PHP | | | PHP Email image generator - hide your email from bots - using the GD Library
Categories : PHP, Graphics, GD image library, Beginner Guides | |
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